Celtics’ new radio home is 98.5 The Sports Hub

The worst-kept secret in Boston sports radio has become a reality. The Sports Hub will be the new radio home of the Celtics, beginning with the 2013-14 season. It is a multiyear deal, but terms were not disclosed.

The Celtics had been on Entercom-owned stations since 2005-06 — WRKO for two years and then WEEI through last season — but they parted ways in August.

The Sports Hub now has rights deals with three of the four major Boston sports franchises — the Celtics, Patriots, and Bruins. When the Celtics and Bruins play on the same night, the former will move to WZLX, another highly rated CBS Radio-owned station in the market.

The long-running and popular broadcast tandem of play-by-play voice Sean Grande and analyst Cedric Maxwell will remain intact.